One person was shot in the parking lot of Eastern Florida State College in Palm Bay on Thursday afternoon.
The campus has been locked down and all classes have been canceled for the day.
Police said the shooting stemmed from a fight just before 2 p.m. One person was being attacked and went back to his car, got a gun and shot one of the men beating him, police said.
The shooting victim was taken to the hospital in critical condition with a gunshot wound to the chest. The shooter was also taken to the hospital for injuries suffered in the fight.
Police were questioning a third person at the scene, and no one is being allowed in or out of the parking lot.
Police said the scene was secure.
All other Eastern Florida State College campuses were operating as normal.